pub fn write_lines(
lines: impl IntoIterator<Item = impl AsRef<str>>,
) -> Result<()>Expand description
Writes many short lines under a single stdout lock (list/doctor/text dumps).
Batches under BufWriter then a single flush (not per-line flush).
Prefer direct writeln! into a locked BufWriter when building lines with
formatting (avoids a Vec<String> of format! results — G-MAC-02).
§Errors
Propagates I/O errors including BrokenPipe.